supervisor: support debugging tinyusb

Allow for passing `-DCFG_TUSB_DEBUG=1` or `-DCFG_TUSB_DEBUG=2` on the
command line to enable debugging tinyusb within circuitpython.

Signed-off-by: Sean Cross <[email protected]>

Author: xobs

supervisor/shared/usb/tusb_config.h

@@ -49,7 +49,9 @@
 //--------------------------------------------------------------------+
 #define CFG_TUSB_RHPORT0_MODE       OPT_MODE_DEVICE
 
+#ifndef CFG_TUSB_DEBUG
 #define CFG_TUSB_DEBUG              0
+#endif
 
 /*------------- RTOS -------------*/
 #define CFG_TUSB_OS                 OPT_OS_NONE